package work;

import java.util.Collection;

public class Test_for {
    public static void main(String[] args) {
        int[] arr = {3,9,6,2,7};

        StringBuilder s1 = new StringBuilder("123");
        StringBuilder s2 = new StringBuilder("123");
        System.out.println(s1.equals(s2));

        Integer i = Integer.valueOf(5);
        i.intValue();

        String s = "sss";
    }
}
